Self-heating iron.



F. H. HARTZELL.

SELF HEATING IRON.

APPLICATION FILED MAY 6. 1914.

1,139,862. Patented May 18, 1915.

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If: nuKRlS PETERS (20., PHOTU-LITHQ, WASHINGTON. 04 C F. H. HARTZELL.

SELF HEATING1RON. APPLICATION FILED MAY61 19x4.

Patented May 18, 1915.

2 SHEETS-SHEET 2.

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nonnsr I-I. rrAnrznLL, or DAYTON, onro, ASSIGNOR To rr-rn'onownHARDVIARE MANUFACTURING COMPANY, or DAYTON, onro, A CORPORATION or onro.

' SELF-HEATING IRON.

Specification of Letters Patent; Patentedhllay 18, 1915..

Application filed May 6, 1914. Serial No. 836,805.

the structure ofsuch devices, whereby they will not only be cheapened inconstruction, but Wlll be more efficient in use, easily operated andcontrolled and unlikely to get out of repair.

A further object of the invention is to provide an improved formofburner for the use of liquid fuel, and further to provide means forprotecting the hand of the opera tor from the intense heat generated bysuch burner. v

WVith the above primary and other incidental objects in View as willmore fully appear in the specification, the invention consists of thefeatures of construction, the parts and combinations thereof or theirequivalent as hereinafter described and set forth in the claims.

Referring to the-drawings Figure l is a longitudinal sectional view ofthe assembled iron. Fig. 2 is a perspective view of the burner removedfrom thebody of the iron. Fig. 3 is a detail view of the perforatedmember of the burner before being compressed showing by dotted lines thedegree of compression. Fig. t is a transverse sectional view of theburner. Fig. 5 is a transverse sectional view of the assembled iron.Fig. 6 is a bottom plan view of theremovable cover body of the iron.Figs. 7 and 8 are detail, transverse and longitudinal and sectionalviews respectively of the main body of the iron with the cover andburner removed.

Like parts are indicated by similar characters of reference throughoutthe several views. a

In constructing the iron, there is employed a main body 1 of the usualproportions and shape having therein a recess or chamber 2 for thereception of the burner. At the rear of the chamber 2 the main body 1 isextended as at 3 so as to form a cup shaped receptacle to form agenerating cup in which the fuel may be placed for initially priming theburner. The rear wall of the chamber 2 is slotted as shown at .4, Fig. 7in which the gage the sides of the slot 4. Projecting horizontally fromsaid head 5 into the cham-.

her 2 is a tubular burner member"? closed at its extremity andperforated on its under side. This hollow burner member is formed from acylindrical tubular member, such as is shown in Fig. 3providedat oneextremity with a closure cap 8, by flattening the cylindrical tubethroughout a portion of its length leaving at the open end a cylindricalportion 11, to engage with the head 5. The flattened or ovate shape ofthe perforated portion of this burner member causes the flame to bedistributed more evenly over a wider space upon the bottom of the mainbody 1, thereby increasing the efficiency of the device. I

Supported upon theihead 5 is a fuel supply conduit 9 communicating witha reservoir 10. This supply "conduit 9 passes through the head 5 abovethe plane of the perforated burner member and is continued within. thechamber 2, first downward to a plane below the level of the perforatedburner member then horizontally parallel with the burner member in aplane below but at one side thereof. The conduit is formed into a Ushaped bight below the burner'member and returns on the opposite sidethereof to a point adjacent to the head 5 and passes upward and thencethrough the head and downward as at 12 to a point opposite the open endof the burner member, Where it is provided with the usual needle valveoperated by the adjusting wheel 13. The liquid fuel is thus passed fromthe burner through the conduit in close proximity to the burner where itis transformed into a gaseous product by the heat before being admittedto the burner.

The upper edge of the main body 1 is notched or recessed as shown at1-4: to permit the escape of the products of'combustion. It has beenfound by experience that when using irons of this type as usuallyconstructed, theoperator is rendered uncomfortable by the subjection ofhis hand t heat arising from the iron.

loo

r The removable cover for the main body of the iron comprises a plate.having a down turned flange 16 about the margin thereof spaced outwardfrom the side walls of the chamber 2 and overlapping the notches orrecesses 14 :in the upper edges of said walls. 7 Secured to the innerside 'of the plate 15 and located within the chamber 2 is an auxiliarycoverplate 17 having a down turned marginal flange 18 spacedinward' fromthe side walls of the chamber 2 and extending below the level of thenotches or recessesllz.

Interposed between the main cover15'and the auxiliary cover 17 isa layer19 of asbes tos or other heat resisting material. double cover plate15and 17 with the-interposed layer of the non-conductive materialreduces'thetendency of the heat to radiate,

upward and confines the heat to the main body 1 of theliron where it' ismost effective;

ator. In additiontothese protective 'fea tures', there is provided a:shield 20 spaced above the cover plate15 to which it is connected bydown turned lugs or cars v21 at' each end ofthe shield. This formsbetween the shield and the cover plate 15 an inter}.

mediate air space 22, by which the heat radiated by theiron is furtherdispersed be 7 fore reaching the hand of the operator.

The opposite ends of the shield'20 are curved upward'as at 23 toform'supports for the handle 24 to be graspedby the hand of theoperator. "As shown in the drawings,

the cover plates'15 and'17 and likewise the shield 20 are preferablythough notneces 4O sarily formed from sheetmetalg e To. secure theremovable'cover in place there isattach-ed' to the outer side of saidcover at the rear thereof, a plate 25 having rearward extendingfingers-26 adapted to engage holes 27 in the rearwall of the chamber'2on each'side of the slot 45. At the for- I ward end of the body 1 thereis provided a pivotedlfinger or button 30 normally registering with theslot'29 in the apex of the cover, but which may be turned to a positionout of alinement with saidslot 29 to secure the cover in position. Asshown in Figs. 1,. I 5 and 6, the'rear end ofthe cover plate 15 isprovided with a down turned flange 28 which rests upon the upper side ofthe. burner head and closes that 'portion of the slot l above the burnerwhen the cover is in place. 7 p v I Having thus described myinventiom-Iclaim: 1

V 1. In a self heating iron, a chambered mainbody, a burner therein forliquid or gaseous fuel comprising a perforated tubu I la r memberflattened throughout a portion of its length-and cylindrical throughoutthe The body.

remainder of its length, a reservoir forfuel, and a condultleadmg fromthe reservolr and extending in parallel'relation with the perforatedmember'at one side thereof and in a plane below that of the perforationsof themember then formed into a U-shaped bight beneath the burner memberand returning on the opposite side thereof in parallel relationtherewith, but in a plane beneath that of the perforationsof the memberand discharging into'the cylindrical extremity of'the burner member. o

2. In a self heating iron, a chambered main body, a perforated'burnermember lo catedtherein comprising a cylindricaltubu U-shaped bightextending in parallel rela- 'so lar member flattened throughout aportion of its extent, a fuel conduit formed into a' tionxwith' theperforated burner member and the bottom of the main body, said fuelburner member, and a fuel reservoir with which the conduit communicates.V V

3. In a. self heating iron, a chambered 'main body, a heating membertherein, a 'cover' for the chambered body, an elongated shield platehaving its opposite ends upturned, a handle supported by the upturnedconduit discharging into the perforated) ends, and integral dependentlugs connct- 1 ing' he shield plate with the body cover but spaced awaytherefrom. 7

4. Ina self heating iron, a chambered" main body, a heating memberthere1n, a

cover for the main body, a'shield plate located in spaced relation abovethe cover, integral dependent tongues connecting the plate with thecover, the opposite ends" of the platebeing'bent upward, and a handleinterposed between the 'upturned'ends of the plate. 7 '5. In a main bodyhavinga recessed upper edge, a

heater-therein, and a cover plate having'a. down turned marginalflangeextending be-j low the level of the recesses of the upper edge *of' themain body but spaced away" therefrom. 7 V V 6. In a self heating iron,-a chambered main body having a recessed upper edge-,a

heater therein, a cover plate'for the main body, and afdown turnedflange carried by the cover, plate extending within theichamber ofthe'lnain body in parallel relation with but spaced inward-from the sidewalls of the main body, extending below the level of the recesses in theupper edge of the main 7. In a self heating iron, a chambered main bodyhaving a recessed upper edge, a heater therein, a cover plate for themain body, and double parallel down turned flangesicarried by the coverplate extending below the level of the recesses in the edge of the mainbody between which the upper edges of the main body project, the flangesself heating iron, a chambered 1 being arranged in parallel relationWith but spaced aWay from the side Walls of the main body.

8. In a self heating iron, a chambered main body having a recessed upperedge, a heater therein, a cover plate having down turned flangesinclosing the upper edges of the Walls of the main chamber but spacedaway therefrom, an auxiliary cover plate secured to the under side ofthe cover plate and a down turned flange on the auxiliary cover plateextending Within the main body in parallel relation With, but spacedaway from the side Walls of said main body.

9. In a self heating iron, a chambered main body having a recessed upperedge, a heater therein, a cover plate having a down turned flangeinclosing theupper edges of the Walls of the main chamber, but spacedaway therefrom, an auxiliary cover plate secured to the under side ofthe main cover plate, a down turned flange on the auxiliary cover plateextending Within the main body in parallel relation With, but spacedaway from the side Walls, of said main body, and a layer of nonheatconductive material located intermediate the main and auxiliary coverplates.

10. In a device of the character described, a main body, a burner forliquid or gaseous fuel supported thereon including a tubular memberformed by collapsing a cylindrical tube throughout a portion of itslength the collapsed portion of the tube having perforations in one ofthe flattened Walls thereof, and a fuel supply conduit discharging intothe uncollapsed portion of the tube.

11. In a device of the character described, 1

a main body, a burner for liquid or gaseous fuel supported thereonincluding a tubular member flattened horizontally throughout a portionof its length, the flattened horizontal portion being perforated on itsunder side, and a fuel supply conduit discharging into the unfiattenedportion.

12. In a device of the character described, a main body, a burner forliquid or gaseous fuel supported thereon including a tubular member ofsubstantially elliptical cross section throughout a portion of itslength, and cylindrical throughout the remainder of its length, theelliptical and cylindrical portions being substantially in axialalinement one With the other, the elliptical portion being perforated,and a fuel supply conduit discharging into the cylindrical portion.

In testimony whereof, I have hereunto set my hand this 17th day of AprilA. D..

FOREST H. vHARTZELL.

Witnesses:

ROBERT E. COWDEN, F. L. WALKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. 0.

